1、选修八 Unit2 CloningPeriod4 Using languageTeaching aims（教学目的）Knowledge aims:1. Get students to learn some useful new words and expressions in this part2. Get students to read the two passages.Ability aims1. Develop students reading skills by extensive reading and enable them to learn how to use differe
2、nt reading skills to read different reading materials.2. Enable students to tell more about clone.Emotional aims:1. Let the Ss have a better understanding of body language in different cultures and try to avoid misunderstanding.2. Develop students sense of group cooperation and teamwork.Teaching emp
3、hasis（教学重点）1. Develop students reading skills by extensive reading.2. Let students read and understand the two passages: showing our feelings and the Open hand-a universal sign.Teaching difficulties（教学难点）Enable students to learn to use reading strategies such as skimming, scanning, and so on.Teachin
4、g &learning procedures (教学与学习过程)Learning Plan（学案）Step1. Preparing lessons &self-study and exploring the problems (预习自学，探究问题)Finish the exercises about the Appositive Clauses in the last period.Step2.Finishing plan & asking questions（完成学案，提出问题） Task1.Answer the following questions:1. Do you like dino
5、saurs? Where have you seen them? Can you see them in our real life? Why?2. Do you think it is possible to clone dinosaurs? If yes, do you think thats good for human beings? Why?(Students give their own answers.)Step3.Researching cooperatively& answering questions(合作探究, 解决问题)Task 2. Read the new word
6、s or the diaries carefully , and answer the questions at Page 15. scanning ( 5ms ) Read the text, then tell the following sentences are true or false. ( Students can discuss in pairs. )1. Scientists are still experimenting with cloning mammals because they think it can make money.2. The animals that
7、 have disappeared from the earth, like dinosaurs, can be brought back to life through cloning.3. If we can clone any extinct animals, we should let them live in a zoo.Suggested answers:all are F.Detail reading ( 6ms )Read the text, then answer the following questions. ( Students can discuss in pairs
8、. )1. Why shouldnt you clone an extinct animal unless there is enough diversity in the group?2. Why is it wrong to clone an extinct animal if it would have to live in a zoo?3. Why cant you clone the DNA of animals that have been extinct longer than 10,000 years?Suggested answers: 1) There will not b
9、e enough genetic variation in the group to be able to resist new illnesses.2) It is not a good idea to clone an animal that would have to live in a zoo because it is not a suitable habitat to develop and increase its numbers. The zoo is not a natural environment for a wild animal.3）The DNA of animal
10、s more than 10,000 years old is not suitable for cloning ,for it cant survive so long.Step4.Summing &chewing, summarizing knowledge（总结反刍 ，知识梳理）Task 3. Discuss some of words ,phrases and sentences in groups .From time to time people suggest that the extinct animals like dinosaurs,can possibly be brou
11、ght back to life through cloning.（P15）时不时有人提议，克隆技术将有可能使地球上已经消失的动物（如恐龙）复生。 【词语拓展】bring sb.back to life 使复生bring back to one，s mind 使人回想起 bring in 带进,引进,赚取bring out 带出,使清楚,显示,出版,产生 bring down 降低,压价,使泄气bring up 抚养,培养,呕吐,提出bring about 带来,引起,造成 【词语运用】根据汉语提示完成句子。(1)It is said that the doctor _.(能起死回生)(2)S
12、cience _in our lives.(为带来了很多变化)(3)She _(养育了)five children.【答案】 (1)is able to bring the dying back to life (2)has brought about many changes (3)has brought upStep5.Testing in class & improving skills（随堂检测，落实考点）Task4. Get the Ss to finish the exercises.(限时20分钟) 1.The genes of the cloned animal are so
13、arranged that it cannot _such a disease , so it soon died. A. keep B. stop C. exist D. resist 2. You have to be firm, but _you should be sympathetic. A. from time to time B. at one time C. at a time D. in time 3. He said nothing, _smiled and watched her. A. most B. merely C. generally D. hardly 4. A
14、ll their hard work has _! The house is finished at last. A. paid back B. paid for C. paid off D. paid 5. Further information can be _from our head office. A. obtained B. achieved C. resisted D. proved 6.Allen and I are in the same history class, but his assignment differs _ mine. A. on B. from C. in
15、 D. to 7. The two sides in the dispute still differ _each other _the question of pay. A. on; with B. with; on C. at; with D. from; in 8. As we are very busy these days, we might _this urgent work for the time being. A. undertake B. agree C. employ D. charge 9. It is very_ that there has been an incr
16、ease in crime in the last six months. A. disturbed B. disturbing C. disturb D. being disturbed 10. Her father_ her to go out alone. A. hoped B. allowed C. forbade D. permitted 11. We hope there will be a new_ in high-technology in China. A. breakdown B. breakup C. breakthrough D. breakout 12. Dust _
17、in a room if we do not clean the room regularly. A. accomplishes B. accumulates C. accommodates D. achieves13.They strongly object to _the plan. A. giving up B. give up C. giving off D. give off 14. I am not _satisfied with the decision. A. exactly B. altogether C. properly D. naturally 15. Since he
18、 heard of his failure at the examination, Tom has been very_.A. cast down B. put down C. turned down D. taken down （答案参见由王军龙主编，陕西师大出版社出版的新课程高中英语词汇导学练P233）Step6. Assessment & Homework（课堂评价，布置学案）Task1. Reading on Page 58-59 ( 10ms )Task2. Read the passages aloud after class and recite some sentences if possible.
